微小重力下における乳化燃料液滴のミクロ爆発 : ミクロ爆発発生に関する統計的検討

概要

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An experimental study was carried out on the microexplosion behavior of an emulsified fuel droplet under normal gravity and microgravity conditions. The oil-in-water emulsion consisted of n-dodecane, and water was used after degasification. The waiting time, which was defined as the time period between ignition and the onset of microexplosion, was measured. The onset probability of microexplosion was discussed from the statistical point of view. The Weibull distribution, which was derived mathematically from the weakest link destruction model, was adopted for this purpose. The results show that the distribution function of the waiting time correlated with the Weibull distribution, and that it is classified as the wear-out type at the initial heating period of the droplet. In contrast, the onset of microexplosion when the droplet temperature remains constant can be considered as the chance failure type. The Weibull distribution of the waiting time under the constant temperature condition for the normal gravity is almost the same as that for the micro gravity case.
一般社団法人日本機械学会の論文
1995-03-25